Wall-plug.



No. 855,129. PATENTED MAY 28, 1907.

F. J. PLYM. WALL PLUG.

APPLICATION FILED OUT. 21. 1905.

J. fzwttx n 'taching furring, base-boards, mo

UNITE s rArEs PATErrr OFFICE. I

FRANCIS J..PLYM, or KANSAS? CITY, MISSOURI.

WALL-PLUG.

Specification of Letters Patent. I

- Patented ma faa eo'z.

Application filed October 21,1905. Serial No. 283,851.

To all whom it may concern;

Be it known that I, FRANCIS J. PLYM, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Wall-Plugs, of which the following is a specification.

- This invention relates to wall-plugsfor atding, shelving, plate-rails and other parts of a structure to brick, stone and cement walls, and my object-is to produce a device of this character which parts the character above referred to, and which performs the function of a gage'in in.

suring the disposition of the plugs in the wall according to standard spacing.

A further object is to rovide a gage atv tachment for the plug which will enablethe workmen without the use of a rule or other measuring appliance,to space the plugs at tures of construction and organization as hereinafter described and claimed; and in or der that it maybe fully understoodreference is to be had to the accompanying drawing, in which Figure 1, represents a portion of a brick wall equipped with nail-receiving plugs embodying my invention, a furring strip being shown as secured to one vertically alined set of said lugs. Fig. 2, is a horizontal section on the hne IIII of Fig. 1. v Fig. 3, is a fullsized section taken on the line III of Fig. 1. Fig. 4, is a similar section taken on the line IV of Fig. 1, 'Fig. 5, is a section on the line VV of Fig. 3 with the mortar-and brick omitted; Fig. 6, is a perspective view of theplug as viewed from the rear side.

In-the said drawings, a sheet of any suitable material which combines flexibility with strength and durability, is bent at its middle as at 1, to provide the superposed plates 2 and 3, and one'of said plates is provided with an extension 4, whichis bent back upon'said plate and upon the corresponding edge of the other plate-so as to bind said plates rigidly together in order that they shall constitute as hereinafter referred to.

extension a gage-strip is attached to the fprovides a secure nailing place for i practically a flattened tube: Forward of the extension 4 the plates. 2 and 3 are provided with lips ,5 and 6 respectively, which lips normally diverge forwardly 'as' shown most clearly in Fig. 3 for the urpose of facilitating the entrance of a nai between the plates Rearward of the plug, the preferred mode of attachment being to secure it between plates-2 and 3. One practical method of securing said gage strip to the plug is by punching holes through the plug and the interposed strip, this method aving a further advantage inv producing cavities in. one sideof the plug and protuberances 8 on the other side which cavities and protuberances provide a roughened surface which insures the "establishment of a more rigid relation between the lug and the IIIOTr tar in whichiit is embed ed'as hereinafter explained, it being further understood that the body of the plugwill' be likewise punctured as at 8*. The gage strip 7-is sixteen inches long and is secured centrally to the tubular plug so that when two of the plugs are arranged in a wall A with contiguous ends of their gage strips abutting, the person in charge of the work will know that the plugs are disposed at the proper points to receive the furring strips hereinafter referred to.

The gage attachment, because of the fact that it projects laterally a considerable'beyond each sidcof the plug and like the'latter is embedded in the mortar, acts as an anchoror brace to guard against edgewise move.-'

ment of the plug, as will be readily under.- stood by reference to Fig. 2, and it will be further noted by reference to said figure that the abutment ofsaid strips end to end will prevent the same from having any oscillatory' or endwise movement in a horizontal plane other than directly forward or back, back movement obviously being impossible because of the lips 5 and 6 engaging the inner face of the wall. Forward movement is prevented by the adhesion between the mortar and'the plug and is further prevented by the fact that the gage strips are completely surrounded by and embedded in the mortar. The rou hened surfaces likewise present obstacles to time movement of the plug. fThe attachments. are also rou hened to aidin resisting movement of the p lugs', this roughening be- I ing preferably produced by puncturing the.

strip. In this connection it should be stated that themarkings on the strip are spaced apart predetermined distances as shown at 9, and that said spaces represent two inches. The gage strips are thus marked because it is frequently found necessary to dispose the plugs at less than standard distances apart. When thus marked they can be spaced apart, say fourteen inches,'without the necessity of measurement by the workmen simply bending back two inches on one of the strips of each horizontal series, or the two inches may be cut off or lapped.

To secure the furring strip in position, it is placed against vertically alined plugs as at 10, and the nail is driven through it and'between the lips of the plug, said lips naturally tending to deflect the nail properly between the top and bottom of the plug. Vl hen the nail is driven home the strip caused to press the lips flatly against the wall as shown in Figs. 2 and 4 most cfearly. The nail is held in the plug'by frictional contact therewith, which frictional engagement is accentuated by means of the roughened surface of the pin and because of the fact that the two Walls 0 the plug are bound together more or less tightly by the protuberanccs of one plate or wall engaging the cavities of the other; theseengfaging protuberances and cavities b eing produced as the result of driving a penetrating tool through the walls or plates.

' The plugs are preferably built into the wall at the time of the erection though it is obvibus that they may be secured therein afterward and it is furthermore obvious that either 'the smooth type of nail shown or a roughened n'ail may be employed in securing the furring strips to the plug. It is furthermore obvious that these plugs may be used in the attachment of base-boards, molding, door frames, pl rails and in various other connections Wit which those skilled in the art of building are familiar.

hen the plugs are to be used for securing parts horizontally to the wall, it is preferable to dispose the plugs vertically between the ends of adjacent bricks or units of the wall structure as shown in dotted lines at B in Fig. 1. then thus arranged it is obvious that the gage attachment if of greater length than the thickness of such units as it always should be if the units or bricks are less than sixteen. inches in height, are bent llOIiZOlk tally so that one portion or arm shall overlie one of the bricks and the other portion or arm shall underlie the other brick or unit. The fact that the strips are of flexible metal of course permits of this disposition of the plug and it is desirable to arrange the latter tially parallel with vertically for securing horizontal place because it surface.

Having thus described the invention what l claim as new and desire to secure by Letters Patent, is I 1.. A flattened tubular wall plug provided with a flaring mouth and at its opposite end with one or more arms extending substantially parallel with and in the same direction as the long diameter of the mouth of the plug.

2. A flattened tubular wall plug provided with a flaring mouth and at its opposite end with one or more arms extending substan tially parallel with and in the same direction as the long diameter of the mouth of the plug; said arms having their faces or wide sides roughened.

3. A flattened tubular wall plug provided with a flaring mouth and at its opposite endv with one or more arms extending substanandv iii-the same direction as the long diameter of the mouth of the plug; said arms having punctures to produce cavities and protuberanccs on the opposite faces or wide sides thereof.

4. A flattened wall plug conun'ising a pair of superposed parts united attheir side mar-- gins and prdvided at its front end with a liaring mouth, and a strip secured to the rear end of the plug and constituting an arm extending substantially parallel with, and in the same direction as the long diameter of the mouth of the plug with its faces or wide sides parallel with the superposed parts forming the plug. i

5. A flattened wall plug, comprising a plate bent to produce two substantially parallel sides or walls forming a compnrativcly long and narrow month, an extension at the free strips in gives a wider range of nailing end of one of said sides or walls bent to overlap the opposite side of the free edge of the companion wall, flanges projecting in opposite directions from the ends of said walls, and. a flat strip fitted and secured between the rear ends of said sides or walls and extending substantially parallel with and in. the same direction as the long. diameter of the mouth of the plug with its faces or wide sides parnl lel with the substantially parallel sides or walls of the plug.

In testimony whereof I allix my signature, in the presence of two witnesses.

FRANCIS J. PLYM'. lVitnesses:

H. C. Rononns, G. Y. 'ln'onrn. 

